<template>
          <li
           :class="isActive?'active':' '"  
          @mouseenter="mouseChangeHandle('enter')"
          @mouseleave="mouseChangeHandle('leave')"
          >
          <label>
            <input type="checkbox" @click='singleCheckHandle(id)' :checked="node"/>
            <span>{{thing}}</span>
          </label>
          <button class="btn btn-danger" @click='singleDeleteHandle(id)'>删除</button>
        </li>
</template>

<script>
export default {
    name:'Item',
    props:['id','thing','node',"singleCheckHandle", "singleDeleteHandle"],
    data(){
      return {
        isActive:false
      }
    },
    methods:{
      mouseChangeHandle(type){
          this.isActive=type==='enter'
      }
    }
}
</script>

<style>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}
li.active{
  background: #ccc;
}
li.active button{
   display: block;
}

</style>